This 1997 Ford F150 needs the GEM module changed due to multiple conditions. To see testing that lead to this repair please click here. The GEM module is located at the rear of the interior fuse box.
The first step is to remove the trim panel that covers the gap between the upper side of the steering column and the dash. It just unsnaps from the dash. It makes it a little easier to remove if you move the shifter all the way down to drive 1.
With that out of the way the lower dash cover can now be removed. Most of the screws have 7 mm heads but there are two that have 8 mm heads.
Those two are at the lower edge of the fuse box.
One wiring harness needs to be disconnected from the panel.
Now the screws for the fuse box can be removed.
The wiring harnesses can be removed from the back of the fuse box. Two 10 mm headed bolts at the center of each connector.
Next remove the tube brace from around the bottom of the steering column. Four fasteners with 13 mm heads.
Now wiggle, pry and twist the fuse box and GEM module assembly down.
After the assembly is down far enough unplug the remaining harness connectors from the GEM module.
Almost there.
The assembly is now free of the vehicle.
The GEM module is held to the back of the fuse box by three phillips headed screws.
Easy to remove Now.
With the three screws removed the GEM unplugs from the back of the fuse box.
I put it all back together and checked my repair for power to the driver’s power window switch.
I honestly do not know and hardly ever work on 4WD systems.
Okay i have a 97 f150 4×4 i have replaced the actuator and both solenoids on firewall and the problem still exsist. Which is the 4×4 light stayz on in dash, and when going down the road it will kick out of 2wd into 4×4 n make clicking n grinding noise till u pull the manual shifter into 4wd then push bk up nto 4wd. Could this be a GEM?
Since you say it works fine in the accessory position I would think about checking/adjusting the ignition switch.
Srry if this is wrong place to do this. My name is sam and my 99 expitidtion was put in shop shade tree mechanic for heater not working after keeping is 6 months I get it back and it works but now windows, radio, wipers, interior lights, and cruise control works for a mile or 2 then quits all at once almost even if no bumps are encounted I drove slow to make sure. But no matter what if I turn the ignition in the back position everything works fine. Thank you for any help email is oaker8323@yahoo.com if want to answer there.
The odds are slightly higher than 50/50 that the GEM module is at fault and water infiltration could play a part in it as well. Has there been any sign of water in the driver’s side interior after a heavy rain? I would start with the blower issue as it will be easier to diagnose. You will need a wiring diagram and multimeter to test with. A scan tool that can communicate with all systems would make it easier.